(Adds details, background, updates injured) ISTANBUL, June 15 (Reuters) - An explosion in a tea garden in Istanbul slightly injured five people on Sunday, broadcaster CNN Turk reported on its website. Police were investigating the blast, which occurred near a gendarme paramilitary police station in a suburb of Istanbul, CNN Turk said. It said the blast could have been caused by a percussion bomb, which makes a loud noise but causes little damage. CNN Turk said the five injured, who had come to watch Turkey's national soccer side play the Czech Republic in Euro 2008, were only slightly injured and were treated on their feet. Explosions are not uncommon in Turkey, where Kurdish separatists, Islamic militants and extreme leftists have all been blamed for bombings. Violence between Turkish troops and the separatists of the Kurdistan Workers Party (PKK) has escalated in recent months in the mainly Kurdish southeast. (Reporting by Emma Ross-Thomas; Editing by Matthew Jones)
A demonstrator holds a banner which reads "This is my country too" as she chants slogans during a protest against the Constitutional Court's verdict about headscarves at universities in Istanbul, June ...
